Merge remote-tracking branch 'upstream/master'

Author: DataDog OpenJDK Sync Bot

.github/actions/get-msys2/action.yml

@@ -30,15 +30,15 @@ runs:
   using: composite
   steps:
     - name: 'Install MSYS2'
-      uses: msys2/[email protected]
+      id: msys2
+      uses: msys2/[email protected]
       with:
         install: 'autoconf tar unzip zip make'
         path-type: minimal
-        location: ${{ runner.tool_cache }}/msys2
+        release: false
 
       # We can't run bash until this is completed, so stick with pwsh
     - name: 'Set MSYS2 path'
       run: |
-        # Prepend msys2/msys64/usr/bin to the PATH
-        echo "$env:RUNNER_TOOL_CACHE/msys2/msys64/usr/bin" >> $env:GITHUB_PATH
+        echo "${{ steps.msys2.outputs.msys2-location }}/usr/bin" >> $env:GITHUB_PATH
       shell: pwsh

bin/unshuffle_list.txt

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -78,7 +78,6 @@ src/jdk.jdi : jdk/src/jdk.jdi
 src/jdk.jdwp.agent : jdk/src/jdk.jdwp.agent
 src/jdk.jlink : jdk/src/jdk.jlink
 src/jdk.jshell : langtools/src/jdk.jshell
-src/jdk.jsobject : jdk/src/jdk.jsobject
 src/jdk.jstatd : jdk/src/jdk.jstatd
 src/jdk.localedata : jdk/src/jdk.localedata
 src/jdk.management : jdk/src/jdk.management

make/autoconf/flags-cflags.m4

@@ -736,8 +736,15 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
         $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -mminimal-toc"
       elif test "x$FLAGS_CPU" = xppc64le; then
         # Little endian machine uses ELFv2 ABI.
-        # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
-        $1_CFLAGS_CPU="-mcpu=power8 -mtune=power10"
+        # Use Power8 for target cpu, this is the first CPU to support PPC64 LE with ELFv2 ABI.
+        # Use Power10 for tuning target, this is supported by gcc >= 10
+        POWER_TUNE_VERSION="-mtune=power10"
+        FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${POWER_TUNE_VERSION}],
+          IF_FALSE: [
+              POWER_TUNE_VERSION="-mtune=power8"
+          ]
+        )
+        $1_CFLAGS_CPU="-mcpu=power8 ${POWER_TUNE_VERSION}"
         $1_CFLAGS_CPU_JVM="${$1_CFLAGS_CPU_JVM} -DABI_ELFv2"
       fi
     elif test "x$FLAGS_CPU" = xs390x; then

make/conf/docs-modules.conf

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2023, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -51,7 +51,6 @@ DOCS_MODULES= \
     jdk.jdwp.agent \
     jdk.jfr \
     jdk.jlink \
-    jdk.jsobject \
     jdk.jshell \
     jdk.jstatd \
     jdk.localedata \

make/conf/module-loader-map.conf

@@ -62,7 +62,6 @@ UPGRADEABLE_PLATFORM_MODULES= \
     java.compiler \
     jdk.graal.compiler \
     jdk.graal.compiler.management \
-    jdk.jsobject \
     #
 
 PLATFORM_MODULES= \

src/hotspot/cpu/aarch64/aarch64.ad

@@ -2362,17 +2362,34 @@ int Matcher::max_vector_size(const BasicType bt) {
 }
 
 int Matcher::min_vector_size(const BasicType bt) {
-  int max_size = max_vector_size(bt);
-  // Limit the min vector size to 8 bytes.
-  int size = 8 / type2aelembytes(bt);
-  if (bt == T_BYTE) {
-    // To support vector api shuffle/rearrange.
-    size = 4;
-  } else if (bt == T_BOOLEAN) {
-    // To support vector api load/store mask.
-    size = 2;
+  // Usually, the shortest vector length supported by AArch64 ISA and
+  // Vector API species is 64 bits. However, we allow 32-bit or 16-bit
+  // vectors in a few special cases.
+  int size;
+  switch(bt) {
+    case T_BOOLEAN:
+      // Load/store a vector mask with only 2 elements for vector types
+      // such as "2I/2F/2L/2D".
+      size = 2;
+      break;
+    case T_BYTE:
+      // Generate a "4B" vector, to support vector cast between "8B/16B"
+      // and "4S/4I/4L/4F/4D".
+      size = 4;
+      break;
+    case T_SHORT:
+      // Generate a "2S" vector, to support vector cast between "4S/8S"
+      // and "2I/2L/2F/2D".
+      size = 2;
+      break;
+    default:
+      // Limit the min vector length to 64-bit.
+      size = 8 / type2aelembytes(bt);
+      // The number of elements in a vector should be at least 2.
+      size = MAX2(size, 2);
   }
-  if (size < 2) size = 2;
+
+  int max_size = max_vector_size(bt);
   return MIN2(size, max_size);
 }
 
@@ -3450,10 +3467,6 @@ encode %{
     __ mov(dst_reg, (uint64_t)1);
   %}
 
-  enc_class aarch64_enc_mov_byte_map_base(iRegP dst, immByteMapBase src) %{
-    __ load_byte_map_base($dst$$Register);
-  %}
-
   enc_class aarch64_enc_mov_n(iRegN dst, immN src) %{
     Register dst_reg = as_Register($dst$$reg);
     address con = (address)$src$$constant;
@@ -4554,20 +4567,6 @@ operand immP_1()
   interface(CONST_INTER);
 %}
 
-// Card Table Byte Map Base
-operand immByteMapBase()
-%{
-  // Get base of card map
-  predicate(BarrierSet::barrier_set()->is_a(BarrierSet::CardTableBarrierSet) &&
-            SHENANDOAHGC_ONLY(!BarrierSet::barrier_set()->is_a(BarrierSet::ShenandoahBarrierSet) &&)
-            (CardTable::CardValue*)n->get_ptr() == ((CardTableBarrierSet*)(BarrierSet::barrier_set()))->card_table()->byte_map_base());
-  match(ConP);
-
-  op_cost(0);
-  format %{ %}
-  interface(CONST_INTER);
-%}
-
 // Float and Double operands
 // Double Immediate
 operand immD()
@@ -6854,20 +6853,6 @@ instruct loadConP1(iRegPNoSp dst, immP_1 con)
   ins_pipe(ialu_imm);
 %}
 
-// Load Byte Map Base Constant
-
-instruct loadByteMapBase(iRegPNoSp dst, immByteMapBase con)
-%{
-  match(Set dst con);
-
-  ins_cost(INSN_COST);
-  format %{ "adr  $dst, $con\t# Byte Map Base" %}
-
-  ins_encode(aarch64_enc_mov_byte_map_base(dst, con));
-
-  ins_pipe(ialu_imm);
-%}
-
 // Load Narrow Pointer Constant
 
 instruct loadConN(iRegNNoSp dst, immN con)